Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Diamond-like carbon (DLC) is a metastable form of amorphous carbon with significant sp3 bonding. DLC is a semiconductor with a high mechanical hardness, chemical inertness, and optical transparency. This review will describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of DLCs. The films have widespread applications as protective coatings in areas, such as magnetic storage disks, optical windows and micro-electromechanical devices (MEMs).

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Diamond-like amorphous carbon

BiFeO3 is perhaps the only material that is both magnetic and a strong ferroelectric at room temperature. As a result, it has had an impact on the field of multiferroics that is comparable to that of yttrium barium copper oxide (YBCO) on superconductors, with hundreds of publications devoted to it in the past few years. In this Review, we try to summarize both the basic physics and unresolved aspects of BiFeO3 (which are still being discovered with several new phase transitions reported in the past few months) and device applications, which center on spintronics and memory devices that can be addressed both electrically and magnetically.

Physics and Applications of Bismuth Ferrite

http://experimentationlab.berkeley.edu/sites/default/files/AFMImages/butt_AFM.pdf

Force measurements with the atomic force microscope: Technique, interpretation and applications

We report a non-Pb piezoelectric ceramic system Ba(Ti(0.8)Zr(0.2))O(3)-(Ba(0.7)Ca(0.3))TiO(3) which shows a surprisingly high piezoelectric coefficient of d(33) approximately 620 pC/N at optimal composition. Its phase diagram shows a morphotropic phase boundary (MPB) starting from a tricritical triple point of a cubic paraelectric phase (C), ferroelectric rhombohedral (R), and tetragonal (T) phases. The high piezoelectricity of the MPB compositions stems from the composition proximity of the MPB to the tricritical triple point, which leads to a nearly vanishing polarization anisotropy and thus facilitates polarization rotation between 001T and 111R states. We predict that the single-crystal form of the MPB composition of the present system may reach a giant d(33) = 1500-2000 pC/N. Our work may provide a new recipe for designing highly piezoelectric materials (both Pb-free and Pb-containing) by searching MPBs starting from a TCP.

Large Piezoelectric Effect in Pb-Free Ceramics

A model has been proposed describing the structural phase transitions in (CH3NH3)2CdCl4-type compounds as order-disorder transitions of the CH3NH3 groups each of which has four possible equilibrium orientations in the cavities between the CdCl6 octahedra. Both two- and four-particle interactions have been taken into account. In the absence of the lattice distortions, the sequence of phase changes is: THT ← ORT ← TLT ← ORT.

Model of structural phase transitions in (CH3NH3)2CdCl4-type compounds

Origin of weak ferromagnetism in TDAE-C60

ESR study of doping effects on the spin-Peierls transition in CuGeO3

93Nb NMR spectra in the relaxor ferroelectric PbMg 1/3 Nb 2/3 O 3 at a temperature of 450 K, which is larger than the temperature of the dielectric susceptibility maximum, have been studied. The peculiar features of the observed NMR lines are wide shoulders and a very narrow central peak, the line shape being strongly asymmetrical in the case of B || [001] and practically symmetrical for B || [011]. The analytical description of NMR lines, allowing for homogeneous and inhomogeneous broadening related to a random distribution of the electric field gradient has been performed. The fitting of the theory and observed line shapes had shown the existence of microregions with (001), and ion shift directions.

Robert Blinc

Papers

Model of structural phase transitions in (CH3NH3)2CdCl4-type compounds

Origin of weak ferromagnetism in TDAE-C60

ESR study of doping effects on the spin-Peierls transition in CuGeO3

93Nb NMR Investigation of the Relaxor Ferroelectric PbMg1/3Nb2/3O3

EPR study of random field smearing of the proton glass transition in Tl2+ doped Rb1-x(NH4)xH2PO4